Aisin Seiki Kabushiki Kaisha

Toyota Jidosha Kabushiki Kaisha

Mitsubishi Jidosha Kogyo Kabushiki Kaisha

Aisin Ai Co., Ltd.

Kabushiki Kaisha Shinsangyokaihatsu

Toyota Motorsport Gmbh

Tomomitsu Terakawa

Yoshihide Suzuki

Yuichiro Kitamura

Yasuhiro Hosoi

Katsunori Ueda

Akihiko Ichikawa

Tomoaki Yanagida

Tetsuya Kohno

Shigeyuki Yoshida

Yoshinori Taguchi

Masaru Shimizu

Tomoyuki Kano

Jun Yabuta

Mitsuo Kikkawa

Yukihiro Inaba

Junichi Kato

Shunichi Hirao

Takao Naito

Naoyuki Maki

Takeshige Miyazaki

Yoshihiro Naruse

Yoshiyuki Aoyama

Shinichi Takeuchi

Kazutaka Kobayashi

Tomohiro Yoshimura

Patrizio Agostinelli

Lars Van Leeuwen

Kotaro Hoshihara

Yoshitomi Haneda

Daisuke Tamaru

Andree Miller

Klemens Pollmeier

Tomoyasu Kurimoto

Akira Mineno

Takeshi Ikeyama

Tuyoshi Murakami

Jun Nishizawa

Hideo Watanabe

Fuminori Monji

Takao Ohi

A vehicle transmission includes a shaft; speed-changing gears; switching mechanisms; and a shifting mechanism. The shifting mechanism is provided with a double-meshing preventing mechanism configured to switch between a one-way state in which the switching mechanisms are hindered from moving in a downshift direction and allowed to move in an upshift direction and a free state in which the switching mechanisms are allowed to move in both the downshift direction and the upshift direction.

Vehicle transmission and control device for vehicle transmission

A gear change control device according to an embodiment includes a detection unit configured to detect the gear stage of a transmission and measure the input rotation rate of the transmission and the rotation rate of an engine and a controller configured to decrease the torque of a clutch to a second reference value from a first reference value when a first time elapses from a time point at which the rotation rate of the engine and the input rotation rate of the transmission become different from each other due to a gear change from a certain gear stage to a gear stage one or a plurality of stages higher than the certain gear stage that is performed by the transmission.

Gear change control device

A control apparatus for a vehicular transmission including at least one dog clutch each having a first dog member mounted on a first shaft such that the first dog member is rotated together with the first shaft, and at least one second dog member each mounted to be axially adjacent to the first dog member and rotatable relative to the first shaft, first gears each mounted to be rotatable relative to the first shaft and provided with the second dog member, second gear which are mounted such that the second gears are rotated together with a second shaft parallel to the first shaft, and which mesh with the respective first gears, and a shifting mechanism for selectively placing each dog clutch in an engaged or released state. The control apparatus includes: a first calculating portion for detecting to a rotary angular position of the first shaft, and calculating a rotary angular position of the first dog member on the basis of the detected rotary angular position of the first shaft; a second calculating portion for detecting a rotary angular position of the second shaft, and calculating a rotary angular position of each second dog member on the basis of the detected rotary angular position of the second shaft; and an engagement control portion for controlling the shifting mechanism on the basis of the rotary angular positions of the first and second dog members, for engagement of the first and second dog members with each other.

Control apparatus for vehicular transmission

A control device for a hybrid vehicle includes a portion determining whether an engine torque is necessary, a portion controlling a motor to make a motor torque be a target torque, an engine rotation speed control portion controlling an engine output shaft to rotate at a target engine rotation speed for sudden start/reacceleration while the clutch being disengaged after starting the engine and before an actual rotation speed of the engine output shaft exceeds a reference target engine rotation speed in a case where the engine torque is necessary, a control portion engaging the clutch after the actual rotation speed exceeds the reference target engine rotation speed, and a portion controlling the engine so that the engine torque is assumed to be a target torque by canceling the control by the engine rotation speed control portion after the actual rotation speed exceeds the reference target engine rotation speed.

Control device for hybrid vehicle

In a transmission control device for a hybrid vehicle, when an engine torque is equal to or less than a predetermined value during a constant speed traveling, a learning engine rotational speed is set to a rotational speed being higher by +&#x3b1; than the present engine rotational speed. Then, a learning engine torque is calculated that corresponds to the learning engine rotational speed, a learning clutch actuator operation amount is obtained that corresponds to the learning clutch torque, and a clutch actuator is operated based on the learning clutch actuator operation amount. Thereafter, when the engine rotational speed and the engine torque are in stable states, a clutch torque value corresponding to the learning clutch actuator operation amount is compensated by a stable engine torque value.

Transmission control device for hybrid vehicle

The gear shifting control device comprises a speed change operation completion detecting portion, a rotation difference judging portion for judging whether or not the absolute difference between the engine rotation speed and the input rotation speed exceeds a predetermined value and a clutch torque&#x2014;operating amount correcting portion which replaces the clutch torque corresponding to the clutch actuator operating amount corresponding to the target clutch torque with a presumed clutch torque. Thus the correction accuracy for the clutch actuator operating amount can be improved by learning a speed change state by extracting a suitable state for learning.

Gear shifting control device for hybrid vehicle

The clutch control device for a hybrid vehicle comprises an engine, an automated manual transmission, a clutch device and a clutch actuator concluding an output rod and a master cylinder which generates a hydraulic pressure therein by closing an idle port in response to the stroke of the output rod, a slave cylinder in fluid communication with the master cylinder through a passage and controlling the clutch device to be in engagement state or disengagement state operated by the hydraulic pressure generated by the master cylinder and a clutch engagement state holding control portion for temporarily holding the clutch device to be in the engagement state by operating the master cylinder to close the idle port after the engagement state under the vehicle being running under a motor drive mode continued for a predetermined time.

Hybrid vehicle clutch control device

A control apparatus of a hybrid vehicle includes an automatic transmission, a clutch, a motor, a battery, a driving assist control device performing a driving assist control by driving the motor to generate an assist torque, a gear shift assist control device performing a gear shift assist control by driving the motor in response to a decrease of the engine torque caused by the disengagement state of the clutch, an SOC value detection device detecting an SOC value, and a first mode switch device switching an operation mode of the hybrid vehicle from a normal mode in which the driving assist control and the gear shift assist control are performed to a battery power preserving mode in which the driving assist control is prohibited and the gear shift assist control is permitted in a case where the SOC value is equal to or smaller than a first predetermined value.

Control apparatus of hybrid vehicle

A gear shift control device for controlling a hybrid vehicle drive system including an engine, an automated transmission, a clutch, and a motor generator, includes a torque indication device for indicating a driver request torque determined in accordance with an operation amount of an accelerator operated by a driver, a power generation interruption device changing a vehicle state to an engine driven state using all of the engine torque when a preliminary gear shift condition is satisfied in a state where the engine drives a driving wheel and the motor generator is actuated to generate an electric power, and a gear shift control device reducing the engine torque and generating an assist torque by actuating the motor generator, disconnecting the clutch, and returning the clutch to a connected state after changing gear sets of the gear train when a gear shift condition of the automated transmission is satisfied.

Gear shift control device for hybrid vehicle drive system

A shift lever operating position judging device includes a position sensor having switches. Each switch is arranged to be at an ON state within a different range in a shift lever operating range, and two or three switches out of the plurality of switches are at the ON state in a different combination in response to each shift lever operating position. The device further includes a calculated value calculating means reading a sensor signal representing the ON or OFF state of the switches and calculating a calculated value based upon the signal, and a first operating position judging means for judging the shift lever position corresponding to the calculated value following a first operating position judgment reference defining the calculated value at the event that all of the plurality of switches have been at a normal condition.

Shift lever operating position judging device

A clutch apparatus includes a clutch disk; a pressure plate for moving the clutch disk through application of pressure; a diaphragm spring for applying a force to the pressure plate so as to urge the pressure plate toward a flywheel; a release bearing for pressing a central portion of the diaphragm spring; a release fork; and an actuator. The pressure plate and an outer circumferential portion of the diaphragm spring are in contact with each other via taper portions of the pressure plate and an adjust wedge member. The clutch apparatus counts the number of clutch operations. In order to obtain a desirable press-contact load according to the counted number of clutch operations, the adjust wedge member is rotated with respect to the pressure plate to thereby modify the attitude of the diaphragm spring.

Clutch apparatus

A clutch control apparatus includes a clutch disk, which is engaged with a flywheel, by means of a diaphragm spring; a release mechanism (including a rod and an electric motor) for pressing a central portion of the diaphragm spring; and a clutch control circuit. The clutch control circuit calculates an ideal clutch load and an output torque of the electric motor for a detected stroke of the rod. On the basis of these values, the clutch control circuit obtains the acceleration of the rod. The clutch control circuit estimates a stroke of the rod from the obtained acceleration and causes an adjust wedge member to rotate such that a detected actual stroke and the estimated stroke become equal, thereby modifying the attitude of the diaphragm spring accordingly.

Clutch control apparatus

An infrared-spectrum image processor mounted in a vehicle assists a driver in seeing under difficult conditions, such as rain, smog or fog. The device operates, in part, on the principle that infrared rays are 'visible' at longer distances than are light rays falling within the visible spectrum, especially when adverse visual conditions exist. Also, different objects have different images when 'viewed' in the infrared spectrum. Thus, even if an image is difficult to see in the visible spectrum, if the infrared spectrum is not disturbed, it may be possible to 'see' the objects anyway. In operation, the processor analyzes a histogram derived from a taken image. If the histogram shows a distribution containing two peaks, the processor determines that there is an obscure image. For mounting on a vehicle an infrared camera is mounted on the vehicle roof. A dash-mounted display is provided for transmitting the processed images to the driver to facilitate decision-making while driving.

Image processor

A vehicle driving force control apparatus which can reduce a driver's embarrassment at difference in accelerator feeling when the driver switches from a constant speed cruise mode to an ordinary variable speed drive mode, and which allows the use of engine brake even while constant speed cruise is requested. The apparatus comprises a switch for constant speed cruise, an accelerator sensor, a brake sensor, a current speed sensor, and a cruise condition judging function for deciding that cruise conditions are satisfied when constant speed cruise is requested, the accelerator pedal is not depressed, and the brake pedal is not depressed, and deciding that the cruise conditions are not satisfied in other cases. It updates target vehicle speed with current vehicle speed when the cruise conditions are not satisfied or on the instant when the cruise conditions are changed from dissatisfied to satisfied and sets controlled output so that current vehicle speed reaches the target vehicle speed. The controller also sets the controlled output when the cruise conditions are satisfied and selects controlled output based only on depression on the accelerator pedal by the driver when the cruise conditions are not satisfied. A throttle valve controls a sucked air amount of an engine based on the selected controlled output.

Vehicle driving force control apparatus

Growing community of inventors

Anjo, Japan

Tomomitsu Terakawa